Сводный каталог книг

[Text] : доклад, тезисы доклада. . Part II / J. Turunen, A. Visapaa. - Helsinki : Technical Research Centre of Finland, 1972. - 6 p. : рис., табл., карта. - (Reprinted from Paperi ja Puu ; № 4). - eng. - Библиогр. в конце ст. - 0.20 р.

УДК

674.2

Аннотация: The procedure is based upon X-ray fluorescence, and has been found very suitable with a largr number of samples. The results of analysis indicated that pine needles and birch leaves contain chloride in no more than negligible amounts. The highest percentages of sulphur encountered in pine needles were less than one half of the amount considered dangerous (0.5 per cent), and practically the same as those derived ealier in the vicinity of soidium sulphite pulp mill in Ornskoldsvik, Sweden. Similar mean values were found for the total sulphur in pine needle samples collected from Lahti and from the central area of Rauma town locating about two kilometers to the north and north east from pulp mill


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Visapaa, A.
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[Text] : доклад, тезисы доклада. . Part I / J. Turunen, A. Visapaa. - Helsinki : Technical Research Centre of Finland, 1972. - 7 p. : рис., табл. - (Reprinted from Paperi ja Puu ; № 2). - eng. - Библиогр. в конце ст. - 0.20 р.

УДК

674.2

Аннотация: A method is described for the determination of the sulphur content of pine needles and birch leaves by means of X-ray fluorescence. One determination takes about 3 minutes, including preparation of the pellet. Details of the method are presented, and statistical examination is made of the results obtained


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Visapaa, A.
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[Text] = Resistens mot snoskytte hos olika tallprovenienser : научное издание / E. Bjorkman. - Stockholm : Skogshogskolan, 1963. - 16 p. : рис., табл., фото.цв. - (Studia Forestalia Suecica ; № 5). - eng. - Библиогр.: с. 14-15. - 0.05 р.

УДК

06

Аннотация: The experimental material was put out as 2+ 1 plants in the spring of 1954. In October 1956, four plants in each plot were inoculated with snow blight, and the remaing plants sprayed with a 3% solution of lime-sulphur to protect them from attack. The inoculated plants were all attacked by the fungus, and during the following winter constituted natural seats of infection; Details can be seen in table 1 and figs. 1 and 2

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[Text] : научное издание / E. Bjorkman. - Stockholm : Skogshogskolan, 1970. - 48 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 78). - eng. - Библиогр.: с. 45-47. - 0.50 р.

УДК

06

Аннотация: The influence of SO2 on pine (Pinus silvestris) and spruce (Picea abies) has been studied as well in laboratory experiments with different doses of the gas and under different environmental conditions as in field experiments in some industrial districts and in a built-up area near Stockholm. The purpose of the investigation was to try to find out whether it is possible to improve the conditions of the trees by fertilizing so that the susceptibility to gas damages can be reduced. The fertilizers were N and NPK respectively. An evident tendency to recovery of the trees could be seen after fertilizing of stands that were continuously exposed to SO2. Any recovery of trees in shallow soils which had been fertilized with nitrogen could not be observed. In heavily SO2-damaged stands one can very often find single trees not having been affected at all. Further experiments on genetic resistance in pine populations exposed to SO2 are going on.

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[Text] = Iakttagelser pa tall (Pinus silvestris L.) och lavar runt en emissionskalla for HF och SO2 : научное издание / J.-E. Hallgren, B. Nyman. - Stockholm : Skogshogskolan, 1977. - 40 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 137). - eng. - Библиогр.: с. 39-40. - ISBN 91-38-03418-2 : 1.00 р.

УДК

06

Аннотация: The aim of the present study has been to evaluate the extension of eventual influences on the surrounding vegetation of the emission from the iron-sintering plant in Sweden- in close proximity to the communities Koskullskulle, Malmberget and Gallivare. The yearly emission of sulphur dioxide and hydrogen fluoride has been around 2000 ton and 175 ton, respectively for the last years. The content of sulphur and fluorine in the needles of Scots pine from the sample plots has been analysed and correlated to the emission source. The needle drop of coniferous trees, well-known from air polluted areas, has been quantitatively recorded and correlated with the occurrence and physiological reactions in some lichen species from the emission source.


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Nyman, B.
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